Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Combined Effect of Coherent Z Exchange and the Hyperfine Interaction in Atomic PNC

Published

Author(s)

W R. Johnson, M S. Safronova, U I. Safronova

Abstract

The nuclear spin-dependent parity nonconserving (PNC) interaction arising from a combination of the hyperfine interaction and the coherent, spin-independent, PNC interaction from Z exchange is evaluated using many-body perturbation theory. For the 6s^1/2^-681/2 transition in 133Cs, we obtain a result that is about 40% smaller than that found previously by Bouchiat and Piketty [Phys. Lett. B 269, 195 (1991)]. Applying this result to 133Cs, leads to an increase in the experimental value of nuclear anapole moment and exacerbates differences between constratints on PNC menson coupling constants obtained from the Cs anapole moment and those obtained from other nuclear parity violating experiments. Nuclear spin-dependent PNC dipole matrix elements, including contributions from the combined weak-hyperfine interaction, are also given for the 781/2-881/2 transition in 211Fr and for transitions between ground-state hyperfine levels in K, Rb, Cs, Ba+, Au, Tl, Fr, and Ra+.
Citation
Physical Review A (Atomic, Molecular and Optical Physics)

Keywords

anapole moment, hyperfine, parity nonconservation, perturbation theory, spin-dependent PNC effects, weak interactions

Citation

Johnson, W. , Safronova, M. and Safronova, U. (2021), Combined Effect of Coherent Z Exchange and the Hyperfine Interaction in Atomic PNC, Physical Review A (Atomic, Molecular and Optical Physics) (Accessed February 21, 2024)
Created October 12, 2021